title: Controllable preparation of monodisperse microspheres using geometrically mediated droplet formation in a single mold.
abstract: We present a surfactant-free fabrication method for simultaneous generation of monodisperse microspheres with controllable size manner. Droplets that become microspheres by solidification processes are made in a two-step process: capillary rising-induced fluid division and wetting of immiscible fluid in a micromold. Design of the mold geometry and the monomer concentration primarily determines the microsphere size and the size distribution. Furthermore, the synergistic effect of two parameters is able to efficiently manipulate the microsphere sizes from submicrometers to a few hundred micrometers.
authors.affiliation: Department of Chemical Engineering, Chungnam National University, Yuseong-gu, Daejeon, 305-764, South Korea.
authors.forename: Chang-Hyung
authors.initials: CH
authors.lastname: Choi
authors.forename: Jongmin
authors.initials: J
authors.lastname: Kim
authors.forename: Sung-Min
authors.initials: SM
authors.lastname: Kang
authors.forename: Jinkee
authors.initials: J
authors.lastname: Lee
authors.forename: Chang-Soo
authors.initials: CS
authors.lastname: Lee
mesh_terms: D008863:Microspheres; D010316:Particle Size; D013499:Surface Properties; D013696:Temperature